Oxamic Acid Derivatives in Heterocyclic Synthesis: Preparation of 1,4-Oxazine and 1,2,4-Triazino[5,6-<i>e</i>][1,3,4]oxadiazine Derivatives
作者:P. Molina、A. Tárraga、A. Espinosa、M. J. Lidón
DOI:10.1055/s-1987-27860
日期:——
A number of derivatives of the 1,4-oxazine ring system have been prepared by reaction of N-aryl-N-(α-phenylphenacyl)oxamoyl chlorides 1 with amines. Reaction of N-aroyl-N′-ethoxyoxalyl-phenylhydrazines 2 with unsubstituted amidrazones leads to functionalized 1,2,4-triazines which undergo ring-closure to give l,2,4-triazino[5,6-e][1,3,4] oxadiazine derivatives.
通过将N-芳基-N-(α-苯基苯乙酰)氧氨基氯化物1与胺反应,制备了一系列1,4-噁嗪环系的衍生物。将N-芳酰-N'-乙氧基草酰基-苯肼2与未取代的氨肼酮反应,可以得到功能化的1,2,4-三嗪,这些三嗪在闭环反应中生成1,2,4-三嗪[5,6-e][1,3,4]氧杂嗪衍生物。